CAS No.: 118854-48-1 Synonyms: Isopropyl 4-hydroxy-2-methyl-2 H -1,2-benzothiazine-3-carboxylate 1,1-dioxide Formula: C₁₃H₁₅NO₅S Formula Weight: 297.33 Linear Formula: C₁₃H₁₅NO₅S